Rakefile

# Rakefile (for use with rake, obviously).
# Thanks Sergio Campama
# (https://github.com/sergiocampama/Launchpad).
#
# Released under the MIT License. See README.

# Setting the compiler
cc = "msp430-gcc"

# Check if a target mcu was specified
mcu = ENV['mcu']
# If no mcu specified'msp430g2553' will be used
mcu ||= "msp430g2553"

# Setting the FLAGS for compile and link time. If using a different MSP430 be
# sure to change the mmcu option
cflags = "-mmcu=#{mcu} -c -Wall -Os "
lflags = "-mmcu=#{mcu} "

# Defining the folder where the compiled objects will reside
obj_dir = 'obj'
directory obj_dir

# Including all the subfolders inside src to be able to use
# '#include <path/in/src/header.h>'
#includes = FileList['src/**/*.h']
#cflags += includes.join(' -I').insert(0, '-I') unless includes.empty?

# Include all source files inside src
# Remember, this is for a single app, so there is no purpose in placing source
# files of another project However, this would be the place to include files
# from other projects, or libraries outside this project
src_files = FileList['src/**/*.c']
obj_files = src_files.collect { |src| File.join(obj_dir, File.basename(src).ext('obj'))}

# The name of the output binary
bin_out = 'bin.elf'

desc "Just in case someone likes to call it 'build'"
task :build => :link

desc "The default compiles and links"
task :default => :link

desc "Link the compiled objects into the binary"
task :link => :compile do
	puts "Linking binary for #{mcu}..."
	`#{cc} #{lflags} #{obj_files.join(" ")} -o #{bin_out}`
  # This is to check that the output status was 0, if not, something bad
  # happened
	abort "Abort: Error linking #{bin_out}" unless $?.to_i == 0 
	puts "#{bin_out} succesfully generated!"
end

desc "Compile all source files"
task :compile => obj_dir do
	`rm -rf #{File.join(obj_dir, '*')}/* #{bin_out}`
	src_files.each do |source|
		puts "Compiling #{File.basename(source)}..."
		`#{cc} #{cflags} #{source} -o #{File.join(obj_dir, File.basename(source).ext('obj'))}`
    # This is to check that the output status was 0, if not, something bad
    # happened
		abort "Abort: Error compiling #{File.basename(source)}" unless $?.to_i == 0
	end
end

desc "Installs the binary into the Launchpad"
task :install do
	abort "Abort: #{bin_out} not found. Run 'rake' first" unless File.exists?(bin_out)
	puts "Installing #{bin_out}..."
  puts "---mspdebug stdout follows---"
	puts `mspdebug rf2500 erase "prog bin.elf"`
	abort "Abort: Error installing #{bin_out}" unless $?.to_i == 0
  puts "---end of mspdebug output---"
	puts "#{bin_out} succesfully installed!"
end

desc "Clean object files, leave binary .elf alone"
task :clean do
  puts "Cleaning..."
  `rm -rf #{obj_dir}`
  puts "Successfuly cleaned!"
end

desc "Presents the usage to the user"
task :help do
	puts "Usage: 'rake [mcu=msp430g2553 | install | build | help]'"
	puts "When the mcu parameter is not specified, it will use the 'msp430g2553'\noption, as this is the default one on the Launchpad"
end